Will Shortz Presents Double Dip Sudoku : 200 Medium Puzzles

Hungry for more sudoku?
Once you've mastered the easy puzzles it's time to take it up a notch!
This book is the second in the series that starts with Will Shortz Presents Single Scoop Sudoku and ends with Will Shortz Presents Triple Threat Sudoku.

Includes:
-200 medium-level puzzles
-Perfect portable size
-Edited by Will Shortz

“A puzzling global phenomenon” —The Economist

“The biggest craze to hit The Times since the first crossword puzzle was published in 1935.” —The Times of London

“England's most addictive newspaper puzzle.” —New York magazine

“The latest craze in games” —BBC News

“Sudoku is dangerous stuff. Forget work and family—think papers hurled across the room and industrial-sized blobs of correction fluid. I love it!” —The Times of London

“Sudokus are to the first decade of the 21st century what Rubik's Cube was to the 1970s.” —The Daily Telegraph

“Britain has a new addiction. Hunched over newspapers on crowded subway trains, sneaking secret peeks in the office, a puzzle-crazy nation is trying to slot numbers into small checkerboard grids.” —Associated Press

“Forget crosswords.” —The Christian Science Monitor